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diff --git a/node_modules/semver/semver.js b/node_modules/semver/semver.js
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+exports = module.exports = SemVer
+
+var debug
+/* istanbul ignore next */
+if (typeof process === 'object' &&
+ process.env &&
+ process.env.NODE_DEBUG &&
+ /\bsemver\b/i.test(process.env.NODE_DEBUG)) {
+ debug = function () {
+ var args = Array.prototype.slice.call(arguments, 0)
+ args.unshift('SEMVER')
+ console.log.apply(console, args)
+ }
+} else {
+ debug = function () {}
+}
+
+// Note: this is the semver.org version of the spec that it implements
+// Not necessarily the package version of this code.
+exports.SEMVER_SPEC_VERSION = '2.0.0'
+
+var MAX_LENGTH = 256
+var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||
+ /* istanbul ignore next */ 9007199254740991
+
+// Max safe segment length for coercion.
+var MAX_SAFE_COMPONENT_LENGTH = 16
+
+// The actual regexps go on exports.re
+var re = exports.re = []
+var src = exports.src = []
+var t = exports.tokens = {}
+var R = 0
+
+function tok (n) {
+ t[n] = R++
+}
+
+// The following Regular Expressions can be used for tokenizing,
+// validating, and parsing SemVer version strings.
+
+// ## Numeric Identifier
+// A single `0`, or a non-zero digit followed by zero or more digits.
+
+tok('NUMERICIDENTIFIER')
+src[t.NUMERICIDENTIFIER] = '0|[1-9]\\d*'
+tok('NUMERICIDENTIFIERLOOSE')
+src[t.NUMERICIDENTIFIERLOOSE] = '[0-9]+'
+
+// ## Non-numeric Identifier
+// Zero or more digits, followed by a letter or hyphen, and then zero or
+// more letters, digits, or hyphens.
+
+tok('NONNUMERICIDENTIFIER')
+src[t.NONNUMERICIDENTIFIER] = '\\d*[a-zA-Z-][a-zA-Z0-9-]*'
+
+// ## Main Version
+// Three dot-separated numeric identifiers.
+
+tok('MAINVERSION')
+src[t.MAINVERSION] = '(' + src[t.NUMERICIDENTIFIER] + ')\\.' +
+ '(' + src[t.NUMERICIDENTIFIER] + ')\\.' +
+ '(' + src[t.NUMERICIDENTIFIER] + ')'
+
+tok('MAINVERSIONLOOSE')
+src[t.MAINVERSIONLOOSE] = '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\.' +
+ '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\.' +
+ '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')'
+
+// ## Pre-release Version Identifier
+// A numeric identifier, or a non-numeric identifier.
+
+tok('PRERELEASEIDENTIFIER')
+src[t.PRERELEASEIDENTIFIER] = '(?:' + src[t.NUMERICIDENTIFIER] +
+ '|' + src[t.NONNUMERICIDENTIFIER] + ')'
+
+tok('PRERELEASEIDENTIFIERLOOSE')
+src[t.PRERELEASEIDENTIFIERLOOSE] = '(?:' + src[t.NUMERICIDENTIFIERLOOSE] +
+ '|' + src[t.NONNUMERICIDENTIFIER] + ')'
+
+// ## Pre-release Version
+// Hyphen, followed by one or more dot-separated pre-release version
+// identifiers.
+
+tok('PRERELEASE')
+src[t.PRERELEASE] = '(?:-(' + src[t.PRERELEASEIDENTIFIER] +
+ '(?:\\.' + src[t.PRERELEASEIDENTIFIER] + ')*))'
+
+tok('PRERELEASELOOSE')
+src[t.PRERELEASELOOSE] = '(?:-?(' + src[t.PRERELEASEIDENTIFIERLOOSE] +
+ '(?:\\.' + src[t.PRERELEASEIDENTIFIERLOOSE] + ')*))'
+
+// ## Build Metadata Identifier
+// Any combination of digits, letters, or hyphens.
+
+tok('BUILDIDENTIFIER')
+src[t.BUILDIDENTIFIER] = '[0-9A-Za-z-]+'
+
+// ## Build Metadata
+// Plus sign, followed by one or more period-separated build metadata
+// identifiers.
+
+tok('BUILD')
+src[t.BUILD] = '(?:\\+(' + src[t.BUILDIDENTIFIER] +
+ '(?:\\.' + src[t.BUILDIDENTIFIER] + ')*))'
+
+// ## Full Version String
+// A main version, followed optionally by a pre-release version and
+// build metadata.
+
+// Note that the only major, minor, patch, and pre-release sections of
+// the version string are capturing groups. The build metadata is not a
+// capturing group, because it should not ever be used in version
+// comparison.
+
+tok('FULL')
+tok('FULLPLAIN')
+src[t.FULLPLAIN] = 'v?' + src[t.MAINVERSION] +
+ src[t.PRERELEASE] + '?' +
+ src[t.BUILD] + '?'
+
+src[t.FULL] = '^' + src[t.FULLPLAIN] + '$'
+
+// like full, but allows v1.2.3 and =1.2.3, which people do sometimes.
+// also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty
+// common in the npm registry.
+tok('LOOSEPLAIN')
+src[t.LOOSEPLAIN] = '[v=\\s]*' + src[t.MAINVERSIONLOOSE] +
+ src[t.PRERELEASELOOSE] + '?' +
+ src[t.BUILD] + '?'
+
+tok('LOOSE')
+src[t.LOOSE] = '^' + src[t.LOOSEPLAIN] + '$'
+
+tok('GTLT')
+src[t.GTLT] = '((?:<|>)?=?)'
+
+// Something like "2.*" or "1.2.x".
+// Note that "x.x" is a valid xRange identifer, meaning "any version"
+// Only the first item is strictly required.
+tok('XRANGEIDENTIFIERLOOSE')
+src[t.XRANGEIDENTIFIERLOOSE] = src[t.NUMERICIDENTIFIERLOOSE] + '|x|X|\\*'
+tok('XRANGEIDENTIFIER')
+src[t.XRANGEIDENTIFIER] = src[t.NUMERICIDENTIFIER] + '|x|X|\\*'
+
+tok('XRANGEPLAIN')
+src[t.XRANGEPLAIN] = '[v=\\s]*(' + src[t.XRANGEIDENTIFIER] + ')' +
+ '(?:\\.(' + src[t.XRANGEIDENTIFIER] + ')' +
+ '(?:\\.(' + src[t.XRANGEIDENTIFIER] + ')' +
+ '(?:' + src[t.PRERELEASE] + ')?' +
+ src[t.BUILD] + '?' +
+ ')?)?'
+
+tok('XRANGEPLAINLOOSE')
+src[t.XRANGEPLAINLOOSE] = '[v=\\s]*(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
+ '(?:\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
+ '(?:\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
+ '(?:' + src[t.PRERELEASELOOSE] + ')?' +
+ src[t.BUILD] + '?' +
+ ')?)?'
+
+tok('XRANGE')
+src[t.XRANGE] = '^' + src[t.GTLT] + '\\s*' + src[t.XRANGEPLAIN] + '$'
+tok('XRANGELOOSE')
+src[t.XRANGELOOSE] = '^' + src[t.GTLT] + '\\s*' + src[t.XRANGEPLAINLOOSE] + '$'
+
+// Coercion.
+// Extract anything that could conceivably be a part of a valid semver
+tok('COERCE')
+src[t.COERCE] = '(^|[^\\d])' +
+ '(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '})' +
+ '(?:\\.(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +
+ '(?:\\.(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +
+ '(?:$|[^\\d])'
+tok('COERCERTL')
+re[t.COERCERTL] = new RegExp(src[t.COERCE], 'g')
+
+// Tilde ranges.
+// Meaning is "reasonably at or greater than"
+tok('LONETILDE')
+src[t.LONETILDE] = '(?:~>?)'
+
+tok('TILDETRIM')
+src[t.TILDETRIM] = '(\\s*)' + src[t.LONETILDE] + '\\s+'
+re[t.TILDETRIM] = new RegExp(src[t.TILDETRIM], 'g')
+var tildeTrimReplace = '$1~'
+
+tok('TILDE')
+src[t.TILDE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAIN] + '$'
+tok('TILDELOOSE')
+src[t.TILDELOOSE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAINLOOSE] + '$'
+
+// Caret ranges.
+// Meaning is "at least and backwards compatible with"
+tok('LONECARET')
+src[t.LONECARET] = '(?:\\^)'
+
+tok('CARETTRIM')
+src[t.CARETTRIM] = '(\\s*)' + src[t.LONECARET] + '\\s+'
+re[t.CARETTRIM] = new RegExp(src[t.CARETTRIM], 'g')
+var caretTrimReplace = '$1^'
+
+tok('CARET')
+src[t.CARET] = '^' + src[t.LONECARET] + src[t.XRANGEPLAIN] + '$'
+tok('CARETLOOSE')
+src[t.CARETLOOSE] = '^' + src[t.LONECARET] + src[t.XRANGEPLAINLOOSE] + '$'
+
+// A simple gt/lt/eq thing, or just "" to indicate "any version"
+tok('COMPARATORLOOSE')
+src[t.COMPARATORLOOSE] = '^' + src[t.GTLT] + '\\s*(' + src[t.LOOSEPLAIN] + ')$|^$'
+tok('COMPARATOR')
+src[t.COMPARATOR] = '^' + src[t.GTLT] + '\\s*(' + src[t.FULLPLAIN] + ')$|^$'
+
+// An expression to strip any whitespace between the gtlt and the thing
+// it modifies, so that `> 1.2.3` ==> `>1.2.3`
+tok('COMPARATORTRIM')
+src[t.COMPARATORTRIM] = '(\\s*)' + src[t.GTLT] +
+ '\\s*(' + src[t.LOOSEPLAIN] + '|' + src[t.XRANGEPLAIN] + ')'
+
+// this one has to use the /g flag
+re[t.COMPARATORTRIM] = new RegExp(src[t.COMPARATORTRIM], 'g')
+var comparatorTrimReplace = '$1$2$3'
+
+// Something like `1.2.3 - 1.2.4`
+// Note that these all use the loose form, because they'll be
+// checked against either the strict or loose comparator form
+// later.
+tok('HYPHENRANGE')
+src[t.HYPHENRANGE] = '^\\s*(' + src[t.XRANGEPLAIN] + ')' +
+ '\\s+-\\s+' +
+ '(' + src[t.XRANGEPLAIN] + ')' +
+ '\\s*$'
+
+tok('HYPHENRANGELOOSE')
+src[t.HYPHENRANGELOOSE] = '^\\s*(' + src[t.XRANGEPLAINLOOSE] + ')' +
+ '\\s+-\\s+' +
+ '(' + src[t.XRANGEPLAINLOOSE] + ')' +
+ '\\s*$'
+
+// Star ranges basically just allow anything at all.
+tok('STAR')
+src[t.STAR] = '(<|>)?=?\\s*\\*'
+
+// Compile to actual regexp objects.
+// All are flag-free, unless they were created above with a flag.
+for (var i = 0; i < R; i++) {
+ debug(i, src[i])
+ if (!re[i]) {
+ re[i] = new RegExp(src[i])
+ }
+}
+
+exports.parse = parse
+function parse (version, options) {
+ if (!options || typeof options !== 'object') {
+ options = {
+ loose: !!options,
+ includePrerelease: false
+ }
+ }
+
+ if (version instanceof SemVer) {
+ return version
+ }
+
+ if (typeof version !== 'string') {
+ return null
+ }
+
+ if (version.length > MAX_LENGTH) {
+ return null
+ }
+
+ var r = options.loose ? re[t.LOOSE] : re[t.FULL]
+ if (!r.test(version)) {
+ return null
+ }
+
+ try {
+ return new SemVer(version, options)
+ } catch (er) {
+ return null
+ }
+}
+
+exports.valid = valid
+function valid (version, options) {
+ var v = parse(version, options)
+ return v ? v.version : null
+}
+
+exports.clean = clean
+function clean (version, options) {
+ var s = parse(version.trim().replace(/^[=v]+/, ''), options)
+ return s ? s.version : null
+}
+
+exports.SemVer = SemVer
+
+function SemVer (version, options) {
+ if (!options || typeof options !== 'object') {
+ options = {
+ loose: !!options,
+ includePrerelease: false
+ }
+ }
+ if (version instanceof SemVer) {
+ if (version.loose === options.loose) {
+ return version
+ } else {
+ version = version.version
+ }
+ } else if (typeof version !== 'string') {
+ throw new TypeError('Invalid Version: ' + version)
+ }
+
+ if (version.length > MAX_LENGTH) {
+ throw new TypeError('version is longer than ' + MAX_LENGTH + ' characters')
+ }
+
+ if (!(this instanceof SemVer)) {
+ return new SemVer(version, options)
+ }
+
+ debug('SemVer', version, options)
+ this.options = options
+ this.loose = !!options.loose
+
+ var m = version.trim().match(options.loose ? re[t.LOOSE] : re[t.FULL])
+
+ if (!m) {
+ throw new TypeError('Invalid Version: ' + version)
+ }
+
+ this.raw = version
+
+ // these are actually numbers
+ this.major = +m[1]
+ this.minor = +m[2]
+ this.patch = +m[3]
+
+ if (this.major > MAX_SAFE_INTEGER || this.major < 0) {
+ throw new TypeError('Invalid major version')
+ }
+
+ if (this.minor > MAX_SAFE_INTEGER || this.minor < 0) {
+ throw new TypeError('Invalid minor version')
+ }
+
+ if (this.patch > MAX_SAFE_INTEGER || this.patch < 0) {
+ throw new TypeError('Invalid patch version')
+ }
+
+ // numberify any prerelease numeric ids
+ if (!m[4]) {
+ this.prerelease = []
+ } else {
+ this.prerelease = m[4].split('.').map(function (id) {
+ if (/^[0-9]+$/.test(id)) {
+ var num = +id
+ if (num >= 0 && num < MAX_SAFE_INTEGER) {
+ return num
+ }
+ }
+ return id
+ })
+ }
+
+ this.build = m[5] ? m[5].split('.') : []
+ this.format()
+}
+
+SemVer.prototype.format = function () {
+ this.version = this.major + '.' + this.minor + '.' + this.patch
+ if (this.prerelease.length) {
+ this.version += '-' + this.prerelease.join('.')
+ }
+ return this.version
+}
+
+SemVer.prototype.toString = function () {
+ return this.version
+}
+
+SemVer.prototype.compare = function (other) {
+ debug('SemVer.compare', this.version, this.options, other)
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ return this.compareMain(other) || this.comparePre(other)
+}
+
+SemVer.prototype.compareMain = function (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ return compareIdentifiers(this.major, other.major) ||
+ compareIdentifiers(this.minor, other.minor) ||
+ compareIdentifiers(this.patch, other.patch)
+}
+
+SemVer.prototype.comparePre = function (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ // NOT having a prerelease is > having one
+ if (this.prerelease.length && !other.prerelease.length) {
+ return -1
+ } else if (!this.prerelease.length && other.prerelease.length) {
+ return 1
+ } else if (!this.prerelease.length && !other.prerelease.length) {
+ return 0
+ }
+
+ var i = 0
+ do {
+ var a = this.prerelease[i]
+ var b = other.prerelease[i]
+ debug('prerelease compare', i, a, b)
+ if (a === undefined && b === undefined) {
+ return 0
+ } else if (b === undefined) {
+ return 1
+ } else if (a === undefined) {
+ return -1
+ } else if (a === b) {
+ continue
+ } else {
+ return compareIdentifiers(a, b)
+ }
+ } while (++i)
+}
+
+SemVer.prototype.compareBuild = function (other) {
+ if (!(other instanceof SemVer)) {
+ other = new SemVer(other, this.options)
+ }
+
+ var i = 0
+ do {
+ var a = this.build[i]
+ var b = other.build[i]
+ debug('prerelease compare', i, a, b)
+ if (a === undefined && b === undefined) {
+ return 0
+ } else if (b === undefined) {
+ return 1
+ } else if (a === undefined) {
+ return -1
+ } else if (a === b) {
+ continue
+ } else {
+ return compareIdentifiers(a, b)
+ }
+ } while (++i)
+}
+
+// preminor will bump the version up to the next minor release, and immediately
+// down to pre-release. premajor and prepatch work the same way.
+SemVer.prototype.inc = function (release, identifier) {
+ switch (release) {
+ case 'premajor':
+ this.prerelease.length = 0
+ this.patch = 0
+ this.minor = 0
+ this.major++
+ this.inc('pre', identifier)
+ break
+ case 'preminor':
+ this.prerelease.length = 0
+ this.patch = 0
+ this.minor++
+ this.inc('pre', identifier)
+ break
+ case 'prepatch':
+ // If this is already a prerelease, it will bump to the next version
+ // drop any prereleases that might already exist, since they are not
+ // relevant at this point.
+ this.prerelease.length = 0
+ this.inc('patch', identifier)
+ this.inc('pre', identifier)
+ break
+ // If the input is a non-prerelease version, this acts the same as
+ // prepatch.
+ case 'prerelease':
+ if (this.prerelease.length === 0) {
+ this.inc('patch', identifier)
+ }
+ this.inc('pre', identifier)
+ break
+
+ case 'major':
+ // If this is a pre-major version, bump up to the same major version.
+ // Otherwise increment major.
+ // 1.0.0-5 bumps to 1.0.0
+ // 1.1.0 bumps to 2.0.0
+ if (this.minor !== 0 ||
+ this.patch !== 0 ||
+ this.prerelease.length === 0) {
+ this.major++
+ }
+ this.minor = 0
+ this.patch = 0
+ this.prerelease = []
+ break
+ case 'minor':
+ // If this is a pre-minor version, bump up to the same minor version.
+ // Otherwise increment minor.
+ // 1.2.0-5 bumps to 1.2.0
+ // 1.2.1 bumps to 1.3.0
+ if (this.patch !== 0 || this.prerelease.length === 0) {
+ this.minor++
+ }
+ this.patch = 0
+ this.prerelease = []
+ break
+ case 'patch':
+ // If this is not a pre-release version, it will increment the patch.
+ // If it is a pre-release it will bump up to the same patch version.
+ // 1.2.0-5 patches to 1.2.0
+ // 1.2.0 patches to 1.2.1
+ if (this.prerelease.length === 0) {
+ this.patch++
+ }
+ this.prerelease = []
+ break
+ // This probably shouldn't be used publicly.
+ // 1.0.0 "pre" would become 1.0.0-0 which is the wrong direction.
+ case 'pre':
+ if (this.prerelease.length === 0) {
+ this.prerelease = [0]
+ } else {
+ var i = this.prerelease.length
+ while (--i >= 0) {
+ if (typeof this.prerelease[i] === 'number') {
+ this.prerelease[i]++
+ i = -2
+ }
+ }
+ if (i === -1) {
+ // didn't increment anything
+ this.prerelease.push(0)
+ }
+ }
+ if (identifier) {
+ // 1.2.0-beta.1 bumps to 1.2.0-beta.2,
+ // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
+ if (this.prerelease[0] === identifier) {
+ if (isNaN(this.prerelease[1])) {
+ this.prerelease = [identifier, 0]
+ }
+ } else {
+ this.prerelease = [identifier, 0]
+ }
+ }
+ break
+
+ default:
+ throw new Error('invalid increment argument: ' + release)
+ }
+ this.format()
+ this.raw = this.version
+ return this
+}
+
+exports.inc = inc
+function inc (version, release, loose, identifier) {
+ if (typeof (loose) === 'string') {
+ identifier = loose
+ loose = undefined
+ }
+
+ try {
+ return new SemVer(version, loose).inc(release, identifier).version
+ } catch (er) {
+ return null
+ }
+}
+
+exports.diff = diff
+function diff (version1, version2) {
+ if (eq(version1, version2)) {
+ return null
+ } else {
+ var v1 = parse(version1)
+ var v2 = parse(version2)
+ var prefix = ''
+ if (v1.prerelease.length || v2.prerelease.length) {
+ prefix = 'pre'
+ var defaultResult = 'prerelease'
+ }
+ for (var key in v1) {
+ if (key === 'major' || key === 'minor' || key === 'patch') {
+ if (v1[key] !== v2[key]) {
+ return prefix + key
+ }
+ }
+ }
+ return defaultResult // may be undefined
+ }
+}
+
+exports.compareIdentifiers = compareIdentifiers
+
+var numeric = /^[0-9]+$/
+function compareIdentifiers (a, b) {
+ var anum = numeric.test(a)
+ var bnum = numeric.test(b)
+
+ if (anum && bnum) {
+ a = +a
+ b = +b
+ }
+
+ return a === b ? 0
+ : (anum && !bnum) ? -1
+ : (bnum && !anum) ? 1
+ : a < b ? -1
+ : 1
+}
+
+exports.rcompareIdentifiers = rcompareIdentifiers
+function rcompareIdentifiers (a, b) {
+ return compareIdentifiers(b, a)
+}
+
+exports.major = major
+function major (a, loose) {
+ return new SemVer(a, loose).major
+}
+
+exports.minor = minor
+function minor (a, loose) {
+ return new SemVer(a, loose).minor
+}
+
+exports.patch = patch
+function patch (a, loose) {
+ return new SemVer(a, loose).patch
+}
+
+exports.compare = compare
+function compare (a, b, loose) {
+ return new SemVer(a, loose).compare(new SemVer(b, loose))
+}
+
+exports.compareLoose = compareLoose
+function compareLoose (a, b) {
+ return compare(a, b, true)
+}
+
+exports.compareBuild = compareBuild
+function compareBuild (a, b, loose) {
+ var versionA = new SemVer(a, loose)
+ var versionB = new SemVer(b, loose)
+ return versionA.compare(versionB) || versionA.compareBuild(versionB)
+}
+
+exports.rcompare = rcompare
+function rcompare (a, b, loose) {
+ return compare(b, a, loose)
+}
+
+exports.sort = sort
+function sort (list, loose) {
+ return list.sort(function (a, b) {
+ return exports.compareBuild(a, b, loose)
+ })
+}
+
+exports.rsort = rsort
+function rsort (list, loose) {
+ return list.sort(function (a, b) {
+ return exports.compareBuild(b, a, loose)
+ })
+}
+
+exports.gt = gt
+function gt (a, b, loose) {
+ return compare(a, b, loose) > 0
+}
+
+exports.lt = lt
+function lt (a, b, loose) {
+ return compare(a, b, loose) < 0
+}
+
+exports.eq = eq
+function eq (a, b, loose) {
+ return compare(a, b, loose) === 0
+}
+
+exports.neq = neq
+function neq (a, b, loose) {
+ return compare(a, b, loose) !== 0
+}
+
+exports.gte = gte
+function gte (a, b, loose) {
+ return compare(a, b, loose) >= 0
+}
+
+exports.lte = lte
+function lte (a, b, loose) {
+ return compare(a, b, loose) <= 0
+}
+
+exports.cmp = cmp
+function cmp (a, op, b, loose) {
+ switch (op) {
+ case '===':
+ if (typeof a === 'object')
+ a = a.version
+ if (typeof b === 'object')
+ b = b.version
+ return a === b
+
+ case '!==':
+ if (typeof a === 'object')
+ a = a.version
+ if (typeof b === 'object')
+ b = b.version
+ return a !== b
+
+ case '':
+ case '=':
+ case '==':
+ return eq(a, b, loose)
+
+ case '!=':
+ return neq(a, b, loose)
+
+ case '>':
+ return gt(a, b, loose)
+
+ case '>=':
+ return gte(a, b, loose)
+
+ case '<':
+ return lt(a, b, loose)
+
+ case '<=':
+ return lte(a, b, loose)
+
+ default:
+ throw new TypeError('Invalid operator: ' + op)
+ }
+}
+
+exports.Comparator = Comparator
+function Comparator (comp, options) {
+ if (!options || typeof options !== 'object') {
+ options = {
+ loose: !!options,
+ includePrerelease: false
+ }
+ }
+
+ if (comp instanceof Comparator) {
+ if (comp.loose === !!options.loose) {
+ return comp
+ } else {
+ comp = comp.value
+ }
+ }
+
+ if (!(this instanceof Comparator)) {
+ return new Comparator(comp, options)
+ }
+
+ debug('comparator', comp, options)
+ this.options = options
+ this.loose = !!options.loose
+ this.parse(comp)
+
+ if (this.semver === ANY) {
+ this.value = ''
+ } else {
+ this.value = this.operator + this.semver.version
+ }
+
+ debug('comp', this)
+}
+
+var ANY = {}
+Comparator.prototype.parse = function (comp) {
+ var r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
+ var m = comp.match(r)
+
+ if (!m) {
+ throw new TypeError('Invalid comparator: ' + comp)
+ }
+
+ this.operator = m[1] !== undefined ? m[1] : ''
+ if (this.operator === '=') {
+ this.operator = ''
+ }
+
+ // if it literally is just '>' or '' then allow anything.
+ if (!m[2]) {
+ this.semver = ANY
+ } else {
+ this.semver = new SemVer(m[2], this.options.loose)
+ }
+}
+
+Comparator.prototype.toString = function () {
+ return this.value
+}
+
+Comparator.prototype.test = function (version) {
+ debug('Comparator.test', version, this.options.loose)
+
+ if (this.semver === ANY || version === ANY) {
+ return true
+ }
+
+ if (typeof version === 'string') {
+ try {
+ version = new SemVer(version, this.options)
+ } catch (er) {
+ return false
+ }
+ }
+
+ return cmp(version, this.operator, this.semver, this.options)
+}
+
+Comparator.prototype.intersects = function (comp, options) {
+ if (!(comp instanceof Comparator)) {
+ throw new TypeError('a Comparator is required')
+ }
+
+ if (!options || typeof options !== 'object') {
+ options = {
+ loose: !!options,
+ includePrerelease: false
+ }
+ }
+
+ var rangeTmp
+
+ if (this.operator === '') {
+ if (this.value === '') {
+ return true
+ }
+ rangeTmp = new Range(comp.value, options)
+ return satisfies(this.value, rangeTmp, options)
+ } else if (comp.operator === '') {
+ if (comp.value === '') {
+ return true
+ }
+ rangeTmp = new Range(this.value, options)
+ return satisfies(comp.semver, rangeTmp, options)
+ }
+
+ var sameDirectionIncreasing =
+ (this.operator === '>=' || this.operator === '>') &&
+ (comp.operator === '>=' || comp.operator === '>')
+ var sameDirectionDecreasing =
+ (this.operator === '<=' || this.operator === '<') &&
+ (comp.operator === '<=' || comp.operator === '<')
+ var sameSemVer = this.semver.version === comp.semver.version
+ var differentDirectionsInclusive =
+ (this.operator === '>=' || this.operator === '<=') &&
+ (comp.operator === '>=' || comp.operator === '<=')
+ var oppositeDirectionsLessThan =
+ cmp(this.semver, '<', comp.semver, options) &&
+ ((this.operator === '>=' || this.operator === '>') &&
+ (comp.operator === '<=' || comp.operator === '<'))
+ var oppositeDirectionsGreaterThan =
+ cmp(this.semver, '>', comp.semver, options) &&
+ ((this.operator === '<=' || this.operator === '<') &&
+ (comp.operator === '>=' || comp.operator === '>'))
+
+ return sameDirectionIncreasing || sameDirectionDecreasing ||
+ (sameSemVer && differentDirectionsInclusive) ||
+ oppositeDirectionsLessThan || oppositeDirectionsGreaterThan
+}
+
+exports.Range = Range
+function Range (range, options) {
+ if (!options || typeof options !== 'object') {
+ options = {
+ loose: !!options,
+ includePrerelease: false
+ }
+ }
+
+ if (range instanceof Range) {
+ if (range.loose === !!options.loose &&
+ range.includePrerelease === !!options.includePrerelease) {
+ return range
+ } else {
+ return new Range(range.raw, options)
+ }
+ }
+
+ if (range instanceof Comparator) {
+ return new Range(range.value, options)
+ }
+
+ if (!(this instanceof Range)) {
+ return new Range(range, options)
+ }
+
+ this.options = options
+ this.loose = !!options.loose
+ this.includePrerelease = !!options.includePrerelease
+
+ // First, split based on boolean or ||
+ this.raw = range
+ this.set = range.split(/\s*\|\|\s*/).map(function (range) {
+ return this.parseRange(range.trim())
+ }, this).filter(function (c) {
+ // throw out any that are not relevant for whatever reason
+ return c.length
+ })
+
+ if (!this.set.length) {
+ throw new TypeError('Invalid SemVer Range: ' + range)
+ }
+
+ this.format()
+}
+
+Range.prototype.format = function () {
+ this.range = this.set.map(function (comps) {
+ return comps.join(' ').trim()
+ }).join('||').trim()
+ return this.range
+}
+
+Range.prototype.toString = function () {
+ return this.range
+}
+
+Range.prototype.parseRange = function (range) {
+ var loose = this.options.loose
+ range = range.trim()
+ // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`
+ var hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]
+ range = range.replace(hr, hyphenReplace)
+ debug('hyphen replace', range)
+ // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`
+ range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)
+ debug('comparator trim', range, re[t.COMPARATORTRIM])
+
+ // `~ 1.2.3` => `~1.2.3`
+ range = range.replace(re[t.TILDETRIM], tildeTrimReplace)
+
+ // `^ 1.2.3` => `^1.2.3`
+ range = range.replace(re[t.CARETTRIM], caretTrimReplace)
+
+ // normalize spaces
+ range = range.split(/\s+/).join(' ')
+
+ // At this point, the range is completely trimmed and
+ // ready to be split into comparators.
+
+ var compRe = loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
+ var set = range.split(' ').map(function (comp) {
+ return parseComparator(comp, this.options)
+ }, this).join(' ').split(/\s+/)
+ if (this.options.loose) {
+ // in loose mode, throw out any that are not valid comparators
+ set = set.filter(function (comp) {
+ return !!comp.match(compRe)
+ })
+ }
+ set = set.map(function (comp) {
+ return new Comparator(comp, this.options)
+ }, this)
+
+ return set
+}
+
+Range.prototype.intersects = function (range, options) {
+ if (!(range instanceof Range)) {
+ throw new TypeError('a Range is required')
+ }
+
+ return this.set.some(function (thisComparators) {
+ return (
+ isSatisfiable(thisComparators, options) &&
+ range.set.some(function (rangeComparators) {
+ return (
+ isSatisfiable(rangeComparators, options) &&
+ thisComparators.every(function (thisComparator) {
+ return rangeComparators.every(function (rangeComparator) {
+ return thisComparator.intersects(rangeComparator, options)
+ })
+ })
+ )
+ })
+ )
+ })
+}
+
+// take a set of comparators and determine whether there
+// exists a version which can satisfy it
+function isSatisfiable (comparators, options) {
+ var result = true
+ var remainingComparators = comparators.slice()
+ var testComparator = remainingComparators.pop()
+
+ while (result && remainingComparators.length) {
+ result = remainingComparators.every(function (otherComparator) {
+ return testComparator.intersects(otherComparator, options)
+ })
+
+ testComparator = remainingComparators.pop()
+ }
+
+ return result
+}
+
+// Mostly just for testing and legacy API reasons
+exports.toComparators = toComparators
+function toComparators (range, options) {
+ return new Range(range, options).set.map(function (comp) {
+ return comp.map(function (c) {
+ return c.value
+ }).join(' ').trim().split(' ')
+ })
+}
+
+// comprised of xranges, tildes, stars, and gtlt's at this point.
+// already replaced the hyphen ranges
+// turn into a set of JUST comparators.
+function parseComparator (comp, options) {
+ debug('comp', comp, options)
+ comp = replaceCarets(comp, options)
+ debug('caret', comp)
+ comp = replaceTildes(comp, options)
+ debug('tildes', comp)
+ comp = replaceXRanges(comp, options)
+ debug('xrange', comp)
+ comp = replaceStars(comp, options)
+ debug('stars', comp)
+ return comp
+}
+
+function isX (id) {
+ return !id || id.toLowerCase() === 'x' || id === '*'
+}
+
+// ~, ~> --> * (any, kinda silly)
+// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0
+// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0
+// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0
+// ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0
+// ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0
+function replaceTildes (comp, options) {
+ return comp.trim().split(/\s+/).map(function (comp) {
+ return replaceTilde(comp, options)
+ }).join(' ')
+}
+
+function replaceTilde (comp, options) {
+ var r = options.loose ? re[t.TILDELOOSE] : re[t.TILDE]
+ return comp.replace(r, function (_, M, m, p, pr) {
+ debug('tilde', comp, _, M, m, p, pr)
+ var ret
+
+ if (isX(M)) {
+ ret = ''
+ } else if (isX(m)) {
+ ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'
+ } else if (isX(p)) {
+ // ~1.2 == >=1.2.0 <1.3.0
+ ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'
+ } else if (pr) {
+ debug('replaceTilde pr', pr)
+ ret = '>=' + M + '.' + m + '.' + p + '-' + pr +
+ ' <' + M + '.' + (+m + 1) + '.0'
+ } else {
+ // ~1.2.3 == >=1.2.3 <1.3.0
+ ret = '>=' + M + '.' + m + '.' + p +
+ ' <' + M + '.' + (+m + 1) + '.0'
+ }
+
+ debug('tilde return', ret)
+ return ret
+ })
+}
+
+// ^ --> * (any, kinda silly)
+// ^2, ^2.x, ^2.x.x --> >=2.0.0 <3.0.0
+// ^2.0, ^2.0.x --> >=2.0.0 <3.0.0
+// ^1.2, ^1.2.x --> >=1.2.0 <2.0.0
+// ^1.2.3 --> >=1.2.3 <2.0.0
+// ^1.2.0 --> >=1.2.0 <2.0.0
+function replaceCarets (comp, options) {
+ return comp.trim().split(/\s+/).map(function (comp) {
+ return replaceCaret(comp, options)
+ }).join(' ')
+}
+
+function replaceCaret (comp, options) {
+ debug('caret', comp, options)
+ var r = options.loose ? re[t.CARETLOOSE] : re[t.CARET]
+ return comp.replace(r, function (_, M, m, p, pr) {
+ debug('caret', comp, _, M, m, p, pr)
+ var ret
+
+ if (isX(M)) {
+ ret = ''
+ } else if (isX(m)) {
+ ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'
+ } else if (isX(p)) {
+ if (M === '0') {
+ ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'
+ } else {
+ ret = '>=' + M + '.' + m + '.0 <' + (+M + 1) + '.0.0'
+ }
+ } else if (pr) {
+ debug('replaceCaret pr', pr)
+ if (M === '0') {
+ if (m === '0') {
+ ret = '>=' + M + '.' + m + '.' + p + '-' + pr +
+ ' <' + M + '.' + m + '.' + (+p + 1)
+ } else {
+ ret = '>=' + M + '.' + m + '.' + p + '-' + pr +
+ ' <' + M + '.' + (+m + 1) + '.0'
+ }
+ } else {
+ ret = '>=' + M + '.' + m + '.' + p + '-' + pr +
+ ' <' + (+M + 1) + '.0.0'
+ }
+ } else {
+ debug('no pr')
+ if (M === '0') {
+ if (m === '0') {
+ ret = '>=' + M + '.' + m + '.' + p +
+ ' <' + M + '.' + m + '.' + (+p + 1)
+ } else {
+ ret = '>=' + M + '.' + m + '.' + p +
+ ' <' + M + '.' + (+m + 1) + '.0'
+ }
+ } else {
+ ret = '>=' + M + '.' + m + '.' + p +
+ ' <' + (+M + 1) + '.0.0'
+ }
+ }
+
+ debug('caret return', ret)
+ return ret
+ })
+}
+
+function replaceXRanges (comp, options) {
+ debug('replaceXRanges', comp, options)
+ return comp.split(/\s+/).map(function (comp) {
+ return replaceXRange(comp, options)
+ }).join(' ')
+}
+
+function replaceXRange (comp, options) {
+ comp = comp.trim()
+ var r = options.loose ? re[t.XRANGELOOSE] : re[t.XRANGE]
+ return comp.replace(r, function (ret, gtlt, M, m, p, pr) {
+ debug('xRange', comp, ret, gtlt, M, m, p, pr)
+ var xM = isX(M)
+ var xm = xM || isX(m)
+ var xp = xm || isX(p)
+ var anyX = xp
+
+ if (gtlt === '=' && anyX) {
+ gtlt = ''
+ }
+
+ // if we're including prereleases in the match, then we need
+ // to fix this to -0, the lowest possible prerelease value
+ pr = options.includePrerelease ? '-0' : ''
+
+ if (xM) {
+ if (gtlt === '>' || gtlt === '<') {
+ // nothing is allowed
+ ret = '<0.0.0-0'
+ } else {
+ // nothing is forbidden
+ ret = '*'
+ }
+ } else if (gtlt && anyX) {
+ // we know patch is an x, because we have any x at all.
+ // replace X with 0
+ if (xm) {
+ m = 0
+ }
+ p = 0
+
+ if (gtlt === '>') {
+ // >1 => >=2.0.0
+ // >1.2 => >=1.3.0
+ // >1.2.3 => >= 1.2.4
+ gtlt = '>='
+ if (xm) {
+ M = +M + 1
+ m = 0
+ p = 0
+ } else {
+ m = +m + 1
+ p = 0
+ }
+ } else if (gtlt === '<=') {
+ // <=0.7.x is actually <0.8.0, since any 0.7.x should
+ // pass. Similarly, <=7.x is actually <8.0.0, etc.
+ gtlt = '<'
+ if (xm) {
+ M = +M + 1
+ } else {
+ m = +m + 1
+ }
+ }
+
+ ret = gtlt + M + '.' + m + '.' + p + pr
+ } else if (xm) {
+ ret = '>=' + M + '.0.0' + pr + ' <' + (+M + 1) + '.0.0' + pr
+ } else if (xp) {
+ ret = '>=' + M + '.' + m + '.0' + pr +
+ ' <' + M + '.' + (+m + 1) + '.0' + pr
+ }
+
+ debug('xRange return', ret)
+
+ return ret
+ })
+}
+
+// Because * is AND-ed with everything else in the comparator,
+// and '' means "any version", just remove the *s entirely.
+function replaceStars (comp, options) {
+ debug('replaceStars', comp, options)
+ // Looseness is ignored here. star is always as loose as it gets!
+ return comp.trim().replace(re[t.STAR], '')
+}
+
+// This function is passed to string.replace(re[t.HYPHENRANGE])
+// M, m, patch, prerelease, build
+// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
+// 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do
+// 1.2 - 3.4 => >=1.2.0 <3.5.0
+function hyphenReplace ($0,
+ from, fM, fm, fp, fpr, fb,
+ to, tM, tm, tp, tpr, tb) {
+ if (isX(fM)) {
+ from = ''
+ } else if (isX(fm)) {
+ from = '>=' + fM + '.0.0'
+ } else if (isX(fp)) {
+ from = '>=' + fM + '.' + fm + '.0'
+ } else {
+ from = '>=' + from
+ }
+
+ if (isX(tM)) {
+ to = ''
+ } else if (isX(tm)) {
+ to = '<' + (+tM + 1) + '.0.0'
+ } else if (isX(tp)) {
+ to = '<' + tM + '.' + (+tm + 1) + '.0'
+ } else if (tpr) {
+ to = '<=' + tM + '.' + tm + '.' + tp + '-' + tpr
+ } else {
+ to = '<=' + to
+ }
+
+ return (from + ' ' + to).trim()
+}
+
+// if ANY of the sets match ALL of its comparators, then pass
+Range.prototype.test = function (version) {
+ if (!version) {
+ return false
+ }
+
+ if (typeof version === 'string') {
+ try {
+ version = new SemVer(version, this.options)
+ } catch (er) {
+ return false
+ }
+ }
+
+ for (var i = 0; i < this.set.length; i++) {
+ if (testSet(this.set[i], version, this.options)) {
+ return true
+ }
+ }
+ return false
+}
+
+function testSet (set, version, options) {
+ for (var i = 0; i < set.length; i++) {
+ if (!set[i].test(version)) {
+ return false
+ }
+ }
+
+ if (version.prerelease.length && !options.includePrerelease) {
+ // Find the set of versions that are allowed to have prereleases
+ // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0
+ // That should allow `1.2.3-pr.2` to pass.
+ // However, `1.2.4-alpha.notready` should NOT be allowed,
+ // even though it's within the range set by the comparators.
+ for (i = 0; i < set.length; i++) {
+ debug(set[i].semver)
+ if (set[i].semver === ANY) {
+ continue
+ }
+
+ if (set[i].semver.prerelease.length > 0) {
+ var allowed = set[i].semver
+ if (allowed.major === version.major &&
+ allowed.minor === version.minor &&
+ allowed.patch === version.patch) {
+ return true
+ }
+ }
+ }
+
+ // Version has a -pre, but it's not one of the ones we like.
+ return false
+ }
+
+ return true
+}
+
+exports.satisfies = satisfies
+function satisfies (version, range, options) {
+ try {
+ range = new Range(range, options)
+ } catch (er) {
+ return false
+ }
+ return range.test(version)
+}
+
+exports.maxSatisfying = maxSatisfying
+function maxSatisfying (versions, range, options) {
+ var max = null
+ var maxSV = null
+ try {
+ var rangeObj = new Range(range, options)
+ } catch (er) {
+ return null
+ }
+ versions.forEach(function (v) {
+ if (rangeObj.test(v)) {
+ // satisfies(v, range, options)
+ if (!max || maxSV.compare(v) === -1) {
+ // compare(max, v, true)
+ max = v
+ maxSV = new SemVer(max, options)
+ }
+ }
+ })
+ return max
+}
+
+exports.minSatisfying = minSatisfying
+function minSatisfying (versions, range, options) {
+ var min = null
+ var minSV = null
+ try {
+ var rangeObj = new Range(range, options)
+ } catch (er) {
+ return null
+ }
+ versions.forEach(function (v) {
+ if (rangeObj.test(v)) {
+ // satisfies(v, range, options)
+ if (!min || minSV.compare(v) === 1) {
+ // compare(min, v, true)
+ min = v
+ minSV = new SemVer(min, options)
+ }
+ }
+ })
+ return min
+}
+
+exports.minVersion = minVersion
+function minVersion (range, loose) {
+ range = new Range(range, loose)
+
+ var minver = new SemVer('0.0.0')
+ if (range.test(minver)) {
+ return minver
+ }
+
+ minver = new SemVer('0.0.0-0')
+ if (range.test(minver)) {
+ return minver
+ }
+
+ minver = null
+ for (var i = 0; i < range.set.length; ++i) {
+ var comparators = range.set[i]
+
+ comparators.forEach(function (comparator) {
+ // Clone to avoid manipulating the comparator's semver object.
+ var compver = new SemVer(comparator.semver.version)
+ switch (comparator.operator) {
+ case '>':
+ if (compver.prerelease.length === 0) {
+ compver.patch++
+ } else {
+ compver.prerelease.push(0)
+ }
+ compver.raw = compver.format()
+ /* fallthrough */
+ case '':
+ case '>=':
+ if (!minver || gt(minver, compver)) {
+ minver = compver
+ }
+ break
+ case '<':
+ case '<=':
+ /* Ignore maximum versions */
+ break
+ /* istanbul ignore next */
+ default:
+ throw new Error('Unexpected operation: ' + comparator.operator)
+ }
+ })
+ }
+
+ if (minver && range.test(minver)) {
+ return minver
+ }
+
+ return null
+}
+
+exports.validRange = validRange
+function validRange (range, options) {
+ try {
+ // Return '*' instead of '' so that truthiness works.
+ // This will throw if it's invalid anyway
+ return new Range(range, options).range || '*'
+ } catch (er) {
+ return null
+ }
+}
+
+// Determine if version is less than all the versions possible in the range
+exports.ltr = ltr
+function ltr (version, range, options) {
+ return outside(version, range, '<', options)
+}
+
+// Determine if version is greater than all the versions possible in the range.
+exports.gtr = gtr
+function gtr (version, range, options) {
+ return outside(version, range, '>', options)
+}
+
+exports.outside = outside
+function outside (version, range, hilo, options) {
+ version = new SemVer(version, options)
+ range = new Range(range, options)
+
+ var gtfn, ltefn, ltfn, comp, ecomp
+ switch (hilo) {
+ case '>':
+ gtfn = gt
+ ltefn = lte
+ ltfn = lt
+ comp = '>'
+ ecomp = '>='
+ break
+ case '<':
+ gtfn = lt
+ ltefn = gte
+ ltfn = gt
+ comp = '<'
+ ecomp = '<='
+ break
+ default:
+ throw new TypeError('Must provide a hilo val of "<" or ">"')
+ }
+
+ // If it satisifes the range it is not outside
+ if (satisfies(version, range, options)) {
+ return false
+ }
+
+ // From now on, variable terms are as if we're in "gtr" mode.
+ // but note that everything is flipped for the "ltr" function.
+
+ for (var i = 0; i < range.set.length; ++i) {
+ var comparators = range.set[i]
+
+ var high = null
+ var low = null
+
+ comparators.forEach(function (comparator) {
+ if (comparator.semver === ANY) {
+ comparator = new Comparator('>=0.0.0')
+ }
+ high = high || comparator
+ low = low || comparator
+ if (gtfn(comparator.semver, high.semver, options)) {
+ high = comparator
+ } else if (ltfn(comparator.semver, low.semver, options)) {
+ low = comparator
+ }
+ })
+
+ // If the edge version comparator has a operator then our version
+ // isn't outside it
+ if (high.operator === comp || high.operator === ecomp) {
+ return false
+ }
+
+ // If the lowest version comparator has an operator and our version
+ // is less than it then it isn't higher than the range
+ if ((!low.operator || low.operator === comp) &&
+ ltefn(version, low.semver)) {
+ return false
+ } else if (low.operator === ecomp && ltfn(version, low.semver)) {
+ return false
+ }
+ }
+ return true
+}
+
+exports.prerelease = prerelease
+function prerelease (version, options) {
+ var parsed = parse(version, options)
+ return (parsed && parsed.prerelease.length) ? parsed.prerelease : null
+}
+
+exports.intersects = intersects
+function intersects (r1, r2, options) {
+ r1 = new Range(r1, options)
+ r2 = new Range(r2, options)
+ return r1.intersects(r2)
+}
+
+exports.coerce = coerce
+function coerce (version, options) {
+ if (version instanceof SemVer) {
+ return version
+ }
+
+ if (typeof version === 'number') {
+ version = String(version)
+ }
+
+ if (typeof version !== 'string') {
+ return null
+ }
+
+ options = options || {}
+
+ var match = null
+ if (!options.rtl) {
+ match = version.match(re[t.COERCE])
+ } else {
+ // Find the right-most coercible string that does not share
+ // a terminus with a more left-ward coercible string.
+ // Eg, '1.2.3.4' wants to coerce '2.3.4', not '3.4' or '4'
+ //
+ // Walk through the string checking with a /g regexp
+ // Manually set the index so as to pick up overlapping matches.
+ // Stop when we get a match that ends at the string end, since no
+ // coercible string can be more right-ward without the same terminus.
+ var next
+ while ((next = re[t.COERCERTL].exec(version)) &&
+ (!match || match.index + match[0].length !== version.length)
+ ) {
+ if (!match ||
+ next.index + next[0].length !== match.index + match[0].length) {
+ match = next
+ }
+ re[t.COERCERTL].lastIndex = next.index + next[1].length + next[2].length
+ }
+ // leave it in a clean state
+ re[t.COERCERTL].lastIndex = -1
+ }
+
+ if (match === null) {
+ return null
+ }
+
+ return parse(match[2] +
+ '.' + (match[3] || '0') +
+ '.' + (match[4] || '0'), options)
+}